Date: Thu, 4 Dec 2008 13:20:19 +0100 From: Frode Nordahl <frode@nordahl.net> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 7.1-PRERELEASE-p1, panic: dqget: free dquot isn't Message-ID: <576BB990-78D8-4CE8-9660-55EB989EE3BA@nordahl.net> In-Reply-To: <20081204120736.GC2038@deviant.kiev.zoral.com.ua> References: <3B675385-956D-4A26-8E09-E338DF7D7244@nordahl.net> <20081203173939.GA2401@deviant.kiev.zoral.com.ua> <F88AD2CD-04BA-46E5-93B9-A06558136D31@nordahl.net> <20081203194348.GB2401@deviant.kiev.zoral.com.ua> <8A6A8FA5-07A6-4A12-B9AD-6E77E534CED7@nordahl.net> <20081204120736.GC2038@deviant.kiev.zoral.com.ua>
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On 4. des.. 2008, at 13.07, Kostik Belousov wrote:
> On Thu, Dec 04, 2008 at 08:12:45AM +0100, Frode Nordahl wrote:
>> Got it!
>>
>> panic: dqget: free dquot isn't dq=0xffffff00b3d27000
>> (kgdb) p/x *(struct dquot *)0xffffff00b3d27000
>> $1 = {dq_hash = {le_next = 0x0, le_prev = 0xffffff010b9da700},
>> dq_freelist = {
>> tqe_next = 0xffffff0055e2de00, tqe_prev = 0xffffffff80b03710},
>> dq_lock = {
>> lock_object = {lo_name = 0xffffffff8088c21c, lo_type =
>> 0xffffffff8088c21c,
>> lo_flags = 0x1030000, lo_witness_data = {lod_list = {stqe_next
>> = 0x0},
>> lod_witness = 0x0}}, mtx_lock = 0x4, mtx_recurse = 0x0},
>> dq_flags = 0xc, dq_type = 0x0, dq_cnt = 0x0, dq_id = 0x16a37d,
>> dq_ump = 0xffffff00038e1600, dq_dqb = {dqb_bhardlimit = 0x0,
>> dqb_bsoftlimit = 0x0, dqb_curblocks = 0x0, dqb_ihardlimit = 0x0,
>> dqb_isoftlimit = 0x0, dqb_curinodes = 0x1, dqb_btime = 0x493ef2b5,
>> dqb_itime = 0x493ef2b5}}
>>
>> Let me know if I can provide any more information!
>>
>> Updated the crashinfo archive you got an URL to yesterday if you want
>> to poke around yourself.
>
> Please, try the patch below, it should fix a race I see. Quite
> possible,
> this is what you tripped over.
Thanks! I will apply the patch and retry the steps that lead to the
panic!
> On the other hand, dq_id == 1483645 looks very suspicious. Do you
> actually have such large uid in the system ? Could it be that you have
> file on fs owned by such uid ?
Yes. The system has uids ranging from 0 to 3152039 :-)
--
Frode Nordahl
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